#include "usart.h"	  

void UART1_Init(u32 bound){
    //GPIO端口设置
    GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	 
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE);	//使能USART1，GPIOA时钟以及复用功能时钟
     //USART1_TX   PA.9
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;	//复用推挽输出
    GPIO_Init(GPIOA, &GPIO_InitStructure);
   
    //USART1_RX	  PA.10
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入
    GPIO_Init(GPIOA, &GPIO_InitStructure);  

   //Usart1 NVIC 配置

    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//抢占优先级3
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;		//子优先级3
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;			//IRQ通道使能
	NVIC_Init(&NVIC_InitStructure);	//根据指定的参数初始化NVIC寄存器
  
   //USART 初始化设置

	USART_InitStructure.USART_BaudRate = bound;//一般设置为9600;
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式
	USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位
	USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制
	USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;	//收发模式

    USART_Init(USART1, &USART_InitStructure); //初始化串口
    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//开启中断
    USART_Cmd(USART1, ENABLE);                    //使能串口 

}

void UART2_Init(u32 bound){
    //GPIO端口设置
    GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE);	//使能USART2，GPIOA时钟以及复用功能时钟
     //USART1_TX   PA.2
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; //PA.2
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;	//复用推挽输出
    GPIO_Init(GPIOA, &GPIO_InitStructure);
   
    //USART1_RX	  PA.3
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入
    GPIO_Init(GPIOA, &GPIO_InitStructure);  

   //Usart1 NVIC 配置

    NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1 ;//抢占优先级3
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;		//子优先级3
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;			//IRQ通道使能
	NVIC_Init(&NVIC_InitStructure);	//根据指定的参数初始化VIC寄存器
  
   //USART 初始化设置

	USART_InitStructure.USART_BaudRate = bound;//一般设置为9600;
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式
	USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位
	USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制
	USART_InitStructure.USART_Mode = USART_Mode_Rx|USART_Mode_Tx;	//收发模式

    USART_Init(USART2, &USART_InitStructure); //初始化串口
    USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);//开启中断
    USART_Cmd(USART2, ENABLE);                    //使能串口 

}

void UART1_SendCode(u8 *DATA, u8 len, u8 title, u8 end)
{
    USART_ClearFlag(USART1, USART_FLAG_TC);    //发送之前清空发送标志  没有这一句 很容易丢包 第一个数据容易丢失
    USART_SendData(USART1, title);
    while(USART_GetFlagStatus(USART1,USART_FLAG_TC)!=SET);//等待发送结束

    while(len--)
    {
        USART_SendData(USART1, *DATA++);
        while(USART_GetFlagStatus(USART1,USART_FLAG_TC)!=SET);//等待发送结束
    }
    
    USART_SendData(USART1, end);
}

void UART2_SendCode(u8 *DATA, u8 len, u8 title, u8 end)
{
    USART_ClearFlag(USART2, USART_FLAG_TC);    //发送之前清空发送标志  没有这一句 很容易丢包 第一个数据容易丢失
    USART_SendData(USART2, title);
    while(USART_GetFlagStatus(USART2,USART_FLAG_TC)!=SET);//等待发送结束

    while(len--)
    {
        USART_SendData(USART2, *DATA++);
        while(USART_GetFlagStatus(USART2,USART_FLAG_TC)!=SET);//等待发送结束
    }
    
    USART_SendData(USART2, end);
}
